{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{longtable}{l*{2}{c}}
\caption{By View of Sectoral Vulnerability}\\
\hline\hline\endfirsthead\hline\endhead\hline\endfoot\endlastfoot
                &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}\\
                &\multicolumn{1}{c}{Attribution (Base)}&\multicolumn{1}{c}{Attribution (Sector)}\\
\hline
Israel          &    0 (.)         &    0 (.)         \\
[1em]
Iran            &0.152 (0.20)         &-0.270 (-0.32)         \\
[1em]
North Korea     &0.579 (0.76)         &0.437 (0.50)         \\
[1em]
Russia          &0.828 (1.11)         &0.731 (0.87)         \\
[1em]
China           &0.800 (1.05)         &-0.111 (-0.13)         \\
[1em]
the United States&0.227 (0.28)         &0.272 (0.30)         \\
[1em]
Large U.S. corporations&    0 (.)         &    0 (.)         \\
[1em]
The U.S. banking and financial system&-0.723 (-1.06)         &-0.616 (-0.90)         \\
[1em]
Hospitals across the United States&0.319 (0.49)         &                  \\
[1em]
The U.S. power grid&0.422 (0.65)         &1.209 (1.66)         \\
[1em]
The U.S. military's computer networks&0.0231 (0.04)         &0.651 (0.92)         \\
[1em]
Minimal         &    0 (.)         &    0 (.)         \\
[1em]
A few million dollars&1.482\sym{*} (2.10)         &1.007 (1.24)         \\
[1em]
Tens of millions of dollars&1.760\sym{*} (2.58)         &1.433 (1.82)         \\
[1em]
Billions of dollars&2.243\sym{***} (3.42)         &1.866\sym{*} (2.42)         \\
[1em]
No              &    0 (.)         &    0 (.)         \\
[1em]
One person      &0.507 (0.99)         &0.264 (0.44)         \\
[1em]
Dozens of people&1.458\sym{*} (2.49)         &1.314\sym{*} (1.98)         \\
[1em]
Hundreds of people&2.579\sym{***} (4.13)         &2.770\sym{***} (3.86)         \\
[1em]
Somewhat certain&    0 (.)         &    0 (.)         \\
[1em]
Highly confident&3.918\sym{***} (8.09)         &4.137\sym{***} (7.52)         \\
[1em]
Unanimously confident&8.905\sym{***} (15.52)         &9.010\sym{***} (14.20)         \\
[1em]
An individual   &    0 (.)         &    0 (.)         \\
[1em]
A group of civilian hackers&0.705 (1.40)         &0.909 (1.57)         \\
[1em]
A group of terrorists&1.570\sym{*} (2.32)         &1.555\sym{*} (2.03)         \\
[1em]
A government agency&0.565 (1.02)         &0.703 (1.17)         \\
[1em]
No clear motivation&    0 (.)         &    0 (.)         \\
[1em]
Stealing sensitive information&0.537 (0.95)         &0.498 (0.77)         \\
[1em]
Retaliating for specific U.S. policies&0.757 (1.31)         &0.971 (1.51)         \\
[1em]
Disrupting American society generally&1.012 (1.78)         &1.011 (1.56)         \\
[1em]
mostly reject it&    0 (.)         &    0 (.)         \\
[1em]
have mixed views about it&7.395\sym{***} (13.62)         &7.513\sym{***} (12.32)         \\
[1em]
mostly agree with it&15.62\sym{***} (23.58)         &15.82\sym{***} (22.27)         \\
[1em]
Shanahan        &    0 (.)         &    0 (.)         \\
[1em]
Trump           &0.566 (0.80)         &0.637 (0.80)         \\
[1em]
disputed it     &    0 (.)         &    0 (.)         \\
[1em]
refused to comment&1.639\sym{*} (2.35)         &1.764\sym{*} (2.32)         \\
[1em]
endorsed it     &3.658\sym{***} (5.25)         &3.863\sym{***} (5.02)         \\
[1em]
Shanahan X disputed it&    0 (.)         &    0 (.)         \\
[1em]
Shanahan X refused to comment&    0 (.)         &    0 (.)         \\
[1em]
Shanahan X endorsed it&    0 (.)         &    0 (.)         \\
[1em]
Trump X disputed it&    0 (.)         &    0 (.)         \\
[1em]
Trump X refused to comment&-0.417 (-0.42)         &-0.634 (-0.57)         \\
[1em]
Trump X endorsed it&-2.105\sym{*} (-1.98)         &-2.372\sym{*} (-2.01)         \\
[1em]
Female          &2.759\sym{**} (3.11)         &2.781\sym{**} (3.02)         \\
[1em]
Republican      &0.284 (0.31)         &0.368 (0.39)         \\
[1em]
College         &1.762\sym{*} (1.97)         &2.190\sym{*} (2.38)         \\
[1em]
white           &-0.778 (-0.73)         &-0.763 (-0.70)         \\
[1em]
age             &0.188\sym{***} (5.07)         &0.167\sym{***} (4.42)         \\
[1em]
task            &0.717\sym{***} (5.75)         &0.717\sym{***} (4.91)         \\
[1em]
choice          &0.838\sym{**} (2.93)         &0.866\sym{*} (2.40)         \\
[1em]
Very unlikely   &                  &    0 (.)         \\
[1em]
Not very likely &                  &-0.0220 (-0.01)         \\
[1em]
Somewhat likely &                  &1.143 (0.72)         \\
[1em]
Likely          &                  &2.629 (1.60)         \\
[1em]
Very likely     &                  &2.810 (1.58)         \\
[1em]
Constant        &34.84\sym{***} (16.46)         &33.67\sym{***} (13.45)         \\
\hline
Observations    &    12290         &     9539         \\
\hline\hline
\multicolumn{3}{l}{\footnotesize \textit{t} statistics in parentheses}\\
\multicolumn{3}{l}{\footnotesize \sym{*} \(p<0.05\), \sym{**} \(p<0.01\), \sym{***} \(p<0.001\)}\\
\end{longtable}
}
